Roll film box camera



Jan. 3, 1933. M, BALDEWE 1 ,893,122

ROLL FILM BOX CAMERA Filed Nov. 5. 1931 Patented Jan. 3, 1933 I UNITED. STATES ROLL FILM BOX CAMERA PATENT Application fled November 5, 1981, Serial No. 573,260, and in Germany April 2, 1931."- 77 The invention relates to roll-film box cameras with an insertion member for inserting a film removable from the camera casing and carrying the film spool support often quite near to its front wall. In these cameras the camera casing carries the film spool key, which is drawn back when the insertion member is removed or replaced after the (film) insertion, so that its front part clears the slotted end of the spool. Practice has now shown that with this type of camera. the insertion of the film presents considerable difficulties. It is usual to proceed by fitting the let-ofi spool into its bearing. then leading the paper strip supporting the film over the guide rollers and around the picture area frame to the other bearing in which an empty spool has already been laid. The tip of the paper strip is then threaded in and then incidentally rotation of the spool is attempted in order thus to prevent the slipping out of this strip end, that is, to commence the winding-on operation which is continued later, after pushing the insertion member into the camera, by the film spool key mounted on the same. The turning of the spool is however of the greatest diflicultv because the neighbouring walls, particularly the end wall of the insertion member. prevents the grasping of the spool .30 tube with the fingers in order to turn it.

Recognizing this drawback, the removable insertion member has already been omitted and instead the back wall made as a deep cap. But bv this means, although the winding-on operation can be started by turning the spool key. the possibility is in turn created that li ht enters at this joint. It is also in this cafjse a question of a different kind of box 540 camera.

' 1 4, member to such an extent that interference in the winding-on cannot afterwards take place and by such means that it provides an auxiliary key,.particularly on the insertion member, besides the usual film spool key fixed to the camera wall on the camera, which permits of turning the take-up sp moved insertion member. f: q In the drawing several constructional examples of the invention are illustrated. 5.1 i Fig. 1 shows in elevation and partly in section a box cameraof the usualconstr uc'tional type with the inserted insertion memberin elevation. Fig. 2 a part of the front walljincelevation.

Fig. 3the key alone it 001 i on. i there Figs. 4: and 5 show 'in-sideand'back view another constructional formoof'jan auxiliary key fitted to the supporting ;wall :of :the's-insertion member. a

Figs. 6 and 7 show inside and'rear view a third constructional form of an auxiliary key fitted to the supporting wall; of thefins'ertion member. i i The camera 1 supports thefshutter'. arrangement in its front part, shut ofli'by ithe partition 2. Its hollow space A is closed by a rear wall 3 which canbe swung back. -aTlIeinsertion member which fills thehollow space between the walls 2 and 3 is designated by B. It consists of the two side walls .4: and two inclined walls, the direction of which isapparr cut by the stamping lines'5. 3 The side walls 4 also form the bearings 4a, bforithefilm spools. The insertion member -.furthermore has a front wall 6 whichis .provided with the admission opening 7 for therlight rays and which otherwise extendsxat its ends 8 up to the horizontal walls of thecameralm According to Figs. 1 and 2 a kind'of compartment is formed at the frontwall 6 'of the insertion member B by inwardly' pressing a strip -'9 out out by the two parallel incisions, which is pressed through inwards-tobridge form, in which a key 0' is inserted,fwhich is shown separately in Fig.3.. Aslightcould still enter the spool chamberby; the cutting away of the pressed out strip 9, this portion is covered by a strip 10 'which'hasanextension 11 with a locking nose 12 which engages through the-end wall6' into a notchf'li's" of the key C.

The same arrangement can-,however', also be arranged on the side wall 4 as-still further illustrated in Fig. .1, for which purpose this is pressed inwards there. This pressing is designated at 14. All the other are provided with the same reference aracters as above. a v In Figs. 4 and 5 aknurled disc is arranged on the support 46, which pro'ects with a hub-shaped part 16 through the re 46' and is loosely .rotatably fastened by outward bending of the marginal parts 17. The

v the bore 46', in the same manner as before. The weak lugs 19 do not prevent operadown I means associated tlon.

In Figs. 6 and 7 the same reference characters are againused for the same parts as in Figs-4 and 5. The ring member 16, 17, 19

loosely rotatably fastened in the bore 46' of the supporting wall 46. here has lugs 21 in its part 20 beyond the-wall 4b, in which a bail is mounted. This bail it does not prevent the entry of the spool key of the camera 'not illustrated. The supporting wall 4b is in this constructional 23 so that the auxiliary key 22 which of course subsequently turns with it, cannot in any wa disturb the winding operation. F 7position of the key 22 is seen dotted in 1g. Having now particularly described and asis swung sideways,

example bent at a right angle at Theturn rovided with i .i. of slits and the mail etween the slits heing offset from the ad acent wall to provide a roll key light tight cover plate covering MAX, BALDEWEG.

is so shaped that when it certained the nature of my said invention and in what manner the same is to formed, I declare that what I claim is 1. In a camera, a removable roll holder, a roll key pocket formed on and a roll key removably fitted in said pocket.

2. In a camera, a removable roll holder, a roll key pocket adapted to contain a removable roll key, and a spring key latch with the pocket for latching the removable key in position in the pocket. I a r 3. In a camera, a removable roll holder having thin walls, one of said walls being provided with a pair of slits and the metal between the slits being oflset from the adjacent wall to provide a roll key pocket.

'In a camera, a removable roll holder having thin walls, one of said walls being lprovided with a pair of slits and the metal etween the slits being offset from the adjacent wall to provide a roll key pocket, and a light tight cover plate 'coverlng' the portion of said wall from which the pocket forming material has been ofiset.

be per- In a camera, a removable roll holder said roll holder, 

